[英]Haskell RegEx Matching on UTF8 file
我寫了這個 function
module PdfParser (parseOptions) where
import Text.Regex.PCRE
import Data.List.Split
parseOptions :: String -> [String]
parseOptions s = splitOn "\n" (s =~ regex :: String)
where
regex = "(?<=OPTIONS\n)((.|\n)*?)(?=INTERIEUR|INTÉRIEUR|EQUIPEMENTS DE SERIE)"
並測試
module PdfParserSpec (spec) where
import Test.Hspec
import Test.QuickCheck
import PdfParser(parseOptions)
spec :: Spec
spec = do
describe "PdfParser (parseOptions)" $ do
it "return List of options" $ do
referencialText <- readFile "test/assets/referential.txt"
parseOptions referencialText `shouldBe` [
"Peinture métallisée 550 €"
,"Jantes alliage 17\" Viva Stella [RDIF21] 300 €"
,"Chargeur sans fil 250 €"
,"Roue de secours tôle [RSEC01] 150 €"]
但是當我閱讀文本文件時,我所有的字符 éè 等都被 \233f\233 替換。 然后我的正則表達式不起作用。
測試結果:
test/PdfParserSpec.hs:12:7:
1) PdfParser, PdfParser (parseOptions), return List of options
expected: ["Peinture m\233tallis\233e 550 \8364","Jantes alliage 17\" Viva Stella [RDIF21] 300 \8364","Chargeur sans fil 250 \8364","Roue de secours t\244le [RSEC01] 150 \8364"]
but got: ["s alliage 17\" Viva Stella [RDIF21] 300 \8364","Chargeur sans fil 250 \8364","Roue de secours t\244le [RSEC01] 150 \8364","INT\201RIEUR","Sellerie Zen (Au lieu de Selleri"]
我的正則表達式在我的文件上工作-> https://regex101.com/r/HYBmMh/1
我該如何解決?
我將 hackage regex-pcre-builtin更改為light-pcre 。 它有效!
我必須將我的字符串編碼為 ut8 字節串,然后添加 utf8 編譯時標志
module PdfParser (parseOptions) where
import Text.Regex.PCRE.Light(compile, utf8, match)
import Data.ByteString.UTF8(toString, fromString)
import Data.List.Split
import Data.String.Utils(strip)
parseOptions :: String -> Maybe [String]
parseOptions s = (splitOn "\n" . strip . toString . (!!0)) <$> (match regex (fromString s) [])
where
regex = compile (fromString "(?<=OPTIONS\n)([\\s\\S]*?)(?=INTÉRIEUR)") [utf8]
謝謝您的意見:)
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